I don't want to really say anything but you have my condolences...
I can tell this is real... when I'm really upset on the computer, I make a ton of typos and twitch and hit the enter button a lot, etc...
Pull through it man... I was really bummed when my grandparents died, but helping go through their house and organize stuff made me get some closure, just thinking about all the good memories of when I was a small kid...

And it really sucks that you guys were mad at eachother the last time you saw eachother... That's how it was with my mom and her mom (my grandmother).. But you just gotta remember, you were only mad at him for that night, you still love him as your father and he still had all the love for his son...

Sorry, I typed a lot... but I hope it works out for you man